Synthesis and Characterization of a New Binucleating Tetraphosphine Ligand Based on 1,2-Phenylene Chelates and the Structures of Dinickel Tetrachloride Complexes of the Ligand

摘要

A new binucleating tetraphosphine ligand, rac- and meso-(Et_2P-1,2-C_6H_4)P(Ph)CH_2(Ph)P(1,2- C_6H_4PEt_2) (et,ph-P4-Ph), has been synthesized. Separation and purification of the ligand diastereomers have been accomplished via column chromatography. Ni_2Cl_4(et,ph- P4-Ph) complexes of both diastereomers have been prepared in high yield and crystallographically characterized.